I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
reascend reascent resend rescind reasoned recent resent reassigned resined resound resigned resinoid rezoned resinate resonate
scend reascend descend ascend send missend resend rescind reascent nascent quiescent loosened lessened faciend ascent scent descent
reason reassign preassign treason